Icom IC-R30 Advanced Manual page 8

INTRODUCTION
About the air ventilation holes
There are air ventilation holes on the receiver body and battery pack/case that adjust the
air pressure inside of the receiver.
L Applying a sticker over the ventilation hole blocks the air pressure adjustment, and may
decrease the audio output level.
L Damage to the ventilation sheet may reduce the water protection capability.
Ventilation sheet
Here is an air
ventilation hole
under the sheet.
vii
Here is an air
ventilation hole.
Here is an air
ventilation hole.